package org.apache.maven.scm.plugin;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  import java.io.File;
  import java.io.IOException;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.command.export.ExportScmResult;
  import org.apache.maven.scm.repository.ScmRepository;
  import org.codehaus.plexus.util.FileUtils;
  
  /**
   * Get a fresh exported copy of the latest source from the configured scm url.
   *
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   */
  @Mojo( name = "export", requiresProject = false )
  public class ExportMojo
      extends AbstractScmMojo
  {
      /**
       * The version type (branch/tag/revision) of scmVersion.
       */
      @Parameter( property = "scmVersionType" )
      private String scmVersionType;
  
      /**
       * The version (revision number/branch name/tag name).
       */
      @Parameter( property = "scmVersion" )
      private String scmVersion;
  
      /**
       * The directory to export the sources to.
       */
      @Parameter( property = "exportDirectory", defaultValue = "${project.build.directory}/export", required = true )
      private File exportDirectory;
  
      /**
       * Skip export if exportDirectory exists.
       */
      @Parameter( property = "skipExportIfExists", defaultValue = "false" )
      private boolean skipExportIfExists = false;
  
  
      /** {@inheritDoc} */
      public void execute()
          throws MojoExecutionException
      {
          super.execute();
  
          if ( this.skipExportIfExists && this.exportDirectory.isDirectory() )
          {
              return;
          }
  
          export();
      }
  
      protected File getExportDirectory()
      {
          return this.exportDirectory;
      }
  
      public void setExportDirectory( File exportDirectory )
      {
          this.exportDirectory = exportDirectory;
      }
  
      protected void export()
          throws MojoExecutionException
      {
          if ( this.exportDirectory.getPath().contains( "${project.basedir}" ) )
          {
              //project.basedir is not set under maven 3.x when run without a project
              this.exportDirectory = new File( this.getBasedir(), "target/export" );
          }
         try
         {
             ScmRepository repository = getScmRepository();
 
             try
             {
                 if ( this.exportDirectory.exists() )
                 {
                     this.getLog().info( "Removing " + this.exportDirectory );
 
                     FileUtils.deleteDirectory( this.exportDirectory );
                 }
             }
             catch ( IOException e )
             {
                 throw new MojoExecutionException( "Cannot remove " + getExportDirectory() );
             }
 
             if ( !this.exportDirectory.mkdirs() )
             {
                 throw new MojoExecutionException( "Cannot create " + this.exportDirectory );
             }
 
             ExportScmResult result = getScmManager().export( repository,
                                                              new ScmFileSet( this.exportDirectory.getAbsoluteFile() ),
                                                              getScmVersion( scmVersionType, scmVersion ) );
 
             checkResult( result );
 
             handleExcludesIncludesAfterCheckoutAndExport( this.exportDirectory );
         }
         catch ( ScmException e )
         {
             throw new MojoExecutionException( "Cannot run export command : ", e );
         }
     }
 }